Removing the primary head and replacing its seals
September 26, 2013, 715004208 Rev. A
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4. Hold the head assembly securely against the actuator housing, and then
use the T27 TORX driver to tighten the support plate bolts securely.
5. Connect the pressure transducer cable to the bulkhead.
6. Power-on the ISM.
7. In the Instrument console, select Isocratic Solvent Manager from the
system tree.
8. In the ISM information window, click Maintain > Heads.
9. In the Head Maintenance dialog box, select the primary head.
10. Click Move Forward, and then wait for the piston to engage the plunger
sphere.
11. Use the torque driver to tighten each pump head bolt to 40 inch-pounds
of torque.
12. After tightening each pump head bolt to 40 inch-pounds of torque, use
the torque driver to tighten each pump head bolt to 60 inch-pounds of
torque.
13. Reattach all fittings and seal-wash tubing.
Tip:
When reattaching the outlet tubing to the transducer, tighten the
inlet-tubing fitting finger-tight plus as much as 1/6-turn, for existing
fittings, or 3/4-turn for new fittings.
Caution:
To avoid damaging the plunger, alternately tighten the
support plate screws 1/4-turn so that they are uniformly torqued.
Support plate bolt (2)